:root{--bg: #f4f6f2;--surface: #ffffff;--surface-soft: #eef2ee;--text: #17211f;--muted: #64706b;--line: #d8ded8;--accent: #0b6b5b;--accent-strong: #075246;--blue: #345f8f;--amber: #a95f14;--danger: #ad3a2f;--shadow: 0 14px 34px rgba(26, 40, 36, .08);color:var(--text);font-family:Segoe UI,Microsoft YaHei,PingFang SC,ui-sans-serif,system-ui,sans-serif}*{box-sizing:border-box}body{min-width:320px;margin:0;background:var(--bg)}button,input,select,textarea{font:inherit}button{cursor:pointer}button:disabled,input:disabled,select:disabled,textarea:disabled,.file-button.disabled{cursor:not-allowed;opacity:.58}.shell{width:min(1240px,calc(100% - 32px));margin:0 auto;padding:24px 0 48px}.topbar{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:18px;align-items:end;padding:6px 0 22px;border-bottom:1px solid var(--line)}.eyebrow{margin:0 0 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